12.____________ rapid spread of railways and the increase in ocean transport,
long-distance traveling became more common.
(A) The
(B) With the
(C) It was the
(D) There was a
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統計: A(32), B(474), C(16), D(32), E(0) #1589878
統計: A(32), B(474), C(16), D(32), E(0) #1589878